农业工程学报2003，Vol.19Issue(5)：171-175,5.
罗伦隐球酵母对草梅采后灰霉病害的生物防治
Postharvest biological control of gray mold rot of strawberry with Cryptococcus laurentii
摘要
Abstract
Cryptococcus laurentii was evaluated for its activity in reducing postharvest gray mold decay of strawberries caused by Botrytis cinerea. In the test on PDA (potato-dextrose agar medium) plates, agar disks of C. laurentii NYDA (nutrient yeast dextrose agar) cultures placed on PDA plates seeded with pathogens did not inhibit the growth of B. cinerea. Spore germination of pathogens in PDB (potato dextrose broth) was greatly controlled in the present of living cell suspensions of Crytococcus laurentii. Washed cell suspensions of yeast controlled gray mold better than yeast in culture broth. Treatments of wounds with autoclaved cell cultures or cell-free cultures filtrate did not prevent decay. The concentrations of antagonists had significant effects on biocontrol effectiveness: the higher the concentration of the antagonist, the lower the disease incidence regardless of whether the fruit was stored at 20℃ for 3 days or 2℃ for 20 days. The experiments of reducing natural decay development of intact fruit gave similar result. Thus, C. laurentii could be an alternative to synthetic fungicides for control of postharvest gray mold disease on strawberries.关键词
草莓/灰霉/采后腐烂/生物防治/罗伦隐球酵母Key words
strawberry/gray mold/postharvest rot/biocontrol/Cryptococcus laurentii分类
农业科技引用本文复制引用
郑晓冬,张红印,席玙芳..罗伦隐球酵母对草梅采后灰霉病害的生物防治[J].农业工程学报,2003,19(5):171-175,5.基金项目
National Natural Science Foundation of China (30170659) （30170659）
